MDEF

Magic Defense is the total magical defense that is factored upon magic damage, which is generally based on MATK as whole or partially. However, there are exceptions.

The descriptions used here refer to Hard and Soft MDEF. These names are used for clarity. The vast majority of players do not use these terms in general conversation, and instead refer Armor Mdef (hard) and INT Mdef (soft). Hard MDEF works as a relative reduction, whereas Soft MDEF is a subtractive reduction.

Additive Modifiers

Multiplicative Modifiers

Bypassing MDEF

Weapons

Bypass 10% of hard magic defense of normal monsters and boss monsters when performing a magical attack. Bypass an additional 1% of hard magic defense of normal monsters and boss monsters when performing a magical attack per upgrade level of the item.

Bypass 10% of hard magic defense of normal monsters when performing a magical attack. Bypass an additional 4% of hard magic defense of normal monsters when performing a magical attack per upgrade level of the item, where the effect caps out at 30%.